function menu_item_hover(id){
   document.getElementById(id).className = "menu_item_selected";
}

function menu_item_OFFhover(id){
   document.getElementById(id).className = "menu_item";
}

function estimate_hover(){
   document.getElementById("estimate").className = "estimate_hover";
}

function estimate_OFFhover(){
   document.getElementById("estimate").className = "estimate";
}

function estimate_open(){
   window.location="estimate.html";
}